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为探明四川省巨桉人工林下大型真菌资源,本课题自2008年5月开始在巨桉主要栽培区定期进行地表大型真菌的调查,根据真菌形态并利用分子生物学手段研究林下大型真菌的物种多样性,调查巨桉林下生态因子,分析土壤因子,并对其进行了统计学分析。结果表明:四川巨桉林下大型真菌种群生物多样性较高,大型真菌共17种,隶属于7科10属,其中马勃状硬皮马勃和草地横模马勃为优势种群,并发现一新的外生菌根真菌—银灰口蘑。林下大型真菌主要集中在海拔300650m、郁闭度大于0.7、阴坡半阴坡土层厚的区域。大型真菌可降低巨桉周围土壤pH值,并显著提高土壤N、P、K及有机质含量,对促进巨桉土壤养分循环、改善营林质量及保持人工林生态系统的资源多样性发挥着重要作用。
In order to find out the large-scale fungi resources under the Eucalyptus grandis plantation in Sichuan Province, this project began to survey the large-scale surface fungi regularly in the main cultivation area of Eucalyptus grandiflora in May 2008. Based on the fungal morphology and molecular biology, Of the species diversity, under the giant eucalyptus forest ecological factors, analysis of soil factors, and its statistical analysis. The results showed that the species diversity of giant fungi in Eucalyptus grandis forest in Sichuan Province was high with 17 species belonging to 7 genera and 10 genera. Among them, A new ectomycorrhizal fungus - silver-gray Mushroom. Under large forest fungi mainly concentrated in the area of 300650m above sea level, canopy density greater than 0.7, thick shady and semi-shady soil layers. Macrofungi can reduce soil pH value around Eucalyptus grandis and significantly increase soil N, P, K and organic matter content, play an important role in promoting soil nutrient cycling, improving the quality of forest management and maintaining the diversity of resources in plantation ecosystems .